Aluminum Oxide Protrusion Filter Material

The patent combines aluminum oxide particles with fiber materials to create a composite filter structure. The aluminum oxide particles are deposited on the fiber surfaces, forming a composite material that maintains the filtration function while adding antimicrobial and antivirus properties through the sharp-edged particle geometry that physically damages microorganisms.

The filter utilizes a porous fiber assembly structure that allows fluid passage while providing surface area for aluminum oxide particle deposition. The porous structure maintains filtration capability while the embedded sharp particles provide mechanical destruction of microorganisms passing through or contacting the filter medium.

The patent replaces complex mechanical structures with chemically deposited aluminum oxide particles. Instead of mechanically attaching pre-formed sharp structures to fibers, the invention uses chemical deposition methods to form aluminum oxide particles directly on fiber surfaces, simplifying the manufacturing process while maintaining the mechanical sharp-edge destruction mechanism against microorganisms.

The patent controls the size, shape, and distribution parameters of aluminum oxide particles through deposition process parameters. By adjusting deposition conditions such as particle concentration, deposition time, and particle size distribution, the manufacturing process can be optimized to produce consistent antimicrobial effectiveness without requiring complex post-processing or precise mechanical assembly.